Covering for steam boilers



(NoModeL) E. KRAHENBEIHL 82; P. RICE;

OOVEEI NG FOR STEAM BOILERS, PIPES, AIS ID OTHER HEATED SUEEAQES. No.293,752. Patented Feb. 1884.

N. PETERS. Pnnlo-Limn n hur. Washinglnn. D (L l l l UNITED STATES PATENTOFFICE.

EDWARD KRAHENBEIHL PAUL RICE, OF ALLEGHENY, PENNSYLVANIA. v

- COVERING FOR STEAM BOILERS, PIPES, AND OTHER HEATED SURFACES.

SPECIFICATION forming part of Letters Patent No. 293,752, dated February19, 1884; i Application filed October 10, 1883. (No model.)

To all whom it may concern: v

Be it known that we, EDWARD KRAHEN- BEIHL and PAUL Bron, of Allegheny,in the county of Allegheny and State ofv Pennsylva- 5 nia, have inventedcertain new and useful Improvements in Coverings for Steam Boilers,

Pipes, and other Heated Surfaces; and we do hereby declare the followingto be a full, clear, and exact'description of the invention, such as I0will enable others skilled in the art to which it appertains to make anduse the same.

Our invention relates to an improvement in Y coverings for steam pipes,boilers, 820., the object being to provide a covering or jacket 15 whichshall be so constructed that air-spaces shall be formed at intervalsbetween the covering or jacket and boiler or pipe, and thus secure amore perfect non-conductor of heat; and with this end in view ourinvention con- 20 sists in certain novel features of construction, aswill be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a viewin perspective of ajacket or covering 25 embodying our invention. Fig. 2 is a similar viewofour improvement applied to a pipe.

Fig. 3 is a modification.

A represents a covering or jacket, made of 3o ofvlayers of paper securedtogether, or paperpulp, the inner surface of the same being lined .35cover being also cut longitudinally to more easily apply it to the pipeB, the edges being securedin any desired manner. The covering is flutedor provided with corrugations O, the same being formed when the coveringis compressed into shape. By these means air-spaces E are formed atintervals between the covering and the pipe or boiler, only a smallportion of the covering coming in contact wit-h said pipe or boiler, andthus presenting but a small surface for the transmission of heat, theair-spaces 4 E forming a good non-conductor.

The corrugations may be formed in any desired shape, one form beingshown in Fig. 3 of the drawings, and may'a'lso be made of any desiredsize.

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is-

A covering for steam boilers, pipes, &c. consisting of layers of paperfirmly united together, 5 or paper-pulp, the said covering being linedor coated on its inner surface with asbestus, and

.the said lining and covering being fluted or corrugated longitudinally,whereby air-spaces are formed between the boiler and covering, 6substantially as set forth. I

In testimony whereof. we have signed this specification in the presenceof two subscribing witnesses.

- EDWARD KRAHENBEIHL.

PAUL RICE.

WVitnesses:

- H. F. MOGRADY, L. L. DAVIS.

